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changing textures based on sun location
krisbfunk Vought
Registered User
Join date: 4 Nov 2007
Posts: 8
01-08-2008 11:57
I've seen this done before, does anyone have any tips on how to change a prims texture based on the suns placement?
Ralph Doctorow
Registered User
Join date: 16 Oct 2005
Posts: 560
01-08-2008 12:03
You can get the sun direction vector with llGetSunDirection() and go from there. I've used it to change day and night textures, but it could be a lot more complex depending on how into it you want to get.
Kornscope Komachi
Transitional human
Join date: 30 Aug 2006
Posts: 1,041
01-08-2008 15:08
Yeah, good pickup. This is gonna be essential to make special builds appear how they are meant to in Windlight viewers when purple is not in the chosen colour scheme.
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Okiphia Anatine
Okiphia Rayna
Join date: 22 Nov 2007
Posts: 454
How does windlight hurt?
01-08-2008 15:35
From: Kornscope Komachi
Yeah, good pickup. This is gonna be essential to make special builds appear how they are meant to in Windlight viewers when purple is not in the chosen colour scheme.


How does windlight hurt textures? I have yet to see it actively, where anything looks wrong in Windlight vs normal viewer, but maybe its just me.. I use max settings, and shiny can look a little TOO shiny on low and medium (I think high is fine), but.. I don't see any colour problems.

Would you be willing to post pics or anything?
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Void Singer
Int vSelf = Sing(void);
Join date: 24 Sep 2005
Posts: 6,973
01-08-2008 17:25
From: Okiphia Anatine
How does windlight hurt textures? I have yet to see it actively, where anything looks wrong in Windlight vs normal viewer, but maybe its just me.. I use max settings, and shiny can look a little TOO shiny on low and medium (I think high is fine), but.. I don't see any colour problems.

Would you be willing to post pics or anything?

check in the texture forum for the most glaring examples (a month or 3 back)... windlight tends to over shadow and over hilight in many cases, and it's scarily apparent on many skins... when windlight goes mainstream it'll be interesting to see if people can find a happy testuring medium between min and max settings...
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Okiphia Anatine
Okiphia Rayna
Join date: 22 Nov 2007
Posts: 454
01-08-2008 17:49
From: Void Singer
check in the texture forum for the most glaring examples (a month or 3 back)... windlight tends to over shadow and over hilight in many cases, and it's scarily apparent on many skins... when windlight goes mainstream it'll be interesting to see if people can find a happy testuring medium between min and max settings...


Okies cool.. I stil haven't seen it in person lol.. I have yet to see a skin that looks bad by windlights fault (The only ones I see that look bad are because well.. they are.)

So.. I'll go see if I can find the examples! WEE!
Thankis!
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Gordon Wendt
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Join date: 10 May 2006
Posts: 1,024
01-08-2008 18:19
One major problem with Windlight is that while it won't break existing content it'll make things that are inherently based on how they look like walls, furniture, hair, etc... made from prims look like crap unless your really lucky or unless the designer has been designing them with windlight in mind.
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Okiphia Anatine
Okiphia Rayna
Join date: 22 Nov 2007
Posts: 454
01-08-2008 18:32
From: Gordon Wendt
One major problem with Windlight is that while it won't break existing content it'll make things that are inherently based on how they look like walls, furniture, hair, etc... made from prims look like crap unless your really lucky or unless the designer has been designing them with windlight in mind.

My walls look fine...maybe its cause I used windlight while building.. but my last build looked just fine too.. and the one before that..

I don't think windlight really hurts ANY textures unless they have lighting baked onto them to begin with (Which I find silly but hey, to each their own right?)

It only makes things too bright if the thing had some part made as if lit already anyway it would seem...
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If you need to reach me, IM Okiphia Rayna, not Okiphia Anatine
Void Singer
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Join date: 24 Sep 2005
Posts: 6,973
01-08-2008 18:50
unfortunately, many of the higer quality low prim objects that use complex textures to make up for the lack of prims, require baking shadows and hilights... and can be thouroughly trashed in windlight... that new happy medium is gonna be hard to find.
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Marianne McCann
Feted Inner Child
Join date: 23 Feb 2006
Posts: 7,145
01-08-2008 22:53
From: krisbfunk Vought
I've seen this done before, does anyone have any tips on how to change a prims texture based on the suns placement?


I've wondered this as well, to an extent, as I've wanted to make a sundial that uses the SL sun. Not sure if its even possible, really.

Mari
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Paulo Dielli
Symfurny Furniture
Join date: 19 Jan 2007
Posts: 780
01-09-2008 04:52
From: Okiphia Anatine
I don't think windlight really hurts ANY textures unless they have lighting baked onto them to begin with (Which I find silly but hey, to each their own right?). It only makes things too bright if the thing had some part made as if lit already anyway it would seem...
Sorry Oki, but washout in Windlight is really there. Bright textures lose all details. They look fine at noon (default settings) in the regular viewer, but are overexposed a lot at noon (default) in Windlight. See attached pictures and Jira http://jira.secondlife.com/browse/VWR-3710 (hmm Jira seems to be down at the moment)
Okiphia Anatine
Okiphia Rayna
Join date: 22 Nov 2007
Posts: 454
01-09-2008 08:57
From: Paulo Dielli
Sorry Oki, but washout in Windlight is really there. Bright textures lose all details. They look fine at noon (default settings) in the regular viewer, but are overexposed a lot at noon (default) in Windlight. See attached pictures and Jira http://jira.secondlife.com/browse/VWR-3710 (hmm Jira seems to be down at the moment)

Ah at noon.. I don't count that, since there are still admittedly problems with noon lighting in windlight. I use my own custom day cycle, so I never see it.

Perhaps I'll do that 'sky presets pack' thing that Torley mentioned in one of his blog posts/tutorials, and pass around my sky settings. Looks good (I personally find the default settings a little bland as a whole) and deals with washout.

ETA:: I kinda like the washed out chairs lol.. seems almost matrix-y XD
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In-world, I am Okiphia Rayna. This account is an alt, and is the only account I currently have with payment info on-file due to some account cracking that took place. This is a security measure at present, and I may return to the forums as Okiphia Rayna at a later date.

If you need to reach me, IM Okiphia Rayna, not Okiphia Anatine
Galactica Cuttita
Registered User
Join date: 14 Jan 2008
Posts: 16
hmmmm
06-29-2008 00:01
Been playing with this a bit myself, the day and night thing is easy, but adding say sunrise or sunset or even more is the sticky part. From my limited understanding the sun vector isn't precise, and it is a normalized vector, which I think keeps one from using it to break down the parts of the day.

I have a friend playing with a work around, but it's not my idea to discuss, and I am trying to think up something simpler anyways.